Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
117,127
Directory of Open Access Journals: DOAJ Articles
51,988
PANGAEA - Data Publisher for Earth & Environmental Science
28,302
Arctic Data Center (via DataONE)
18,653
Unknown
17,100
Springer Nature (via Crossref)
6,675
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
6,578
Zenodo
5,945
ScienceDirect (Elsevier - via Crossref)
5,493
Informa (via Crossref)
5,185
University of Calgary Journal Hosting
4,983
University of Tromsø: Munin Open Research Archive
4,770
Arctic Institute of North America (via Crossref)
4,321
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4,105
Wiley Online Library
4,084
Cambridge University Press
3,970
PubMed Central (PMC)
3,896
Defense Technical Information Center: DTIC Technical Reports database
3,693
Copernicus Publications: E-Journals
3,565
Open Parks Network
3,531
LeibnizOpen (The Leibniz Association)
3,272
Wiley Online Library (via Crossref)
3,135
David Rumsey Historical Map Collection (Cartography Associates)
2,704
Springer Nature
2,633
Aarhus University: Research
2,551
Université de Nantes: HAL-UNIV-NANTES
2,454
Niedersächsisches Online-Archiv NOA
2,440
Institut national des sciences de l'Univers: HAL-INSU
2,413
Arctic Council Repository
2,405
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2,075
MDPI Open Access Publishing
2,004
Informa
1,995
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1,938
Biodiversity Heritage Library (BHL)
1,776
CyberLeninka (Scientific Electronic Library)
1,748
University of Copenhagen: Research
1,707
NOAA NCEI Environmental Data Archive (via DataONE)
1,701
ScienceDirect (Elsevier)
1,676
LaCRIS - University of Lapland Current Research System
1,552
Arctic Portal Library
1,534
Canadian Science Publishing (via Crossref)
1,391
Dryad Digital Repository (Duke University)
1,384
RePEc (Research Papers in Economics)
1,328
JSTOR (via Crossref)
1,273
University of California: eScholarship
1,245
Frontiers: Figshare
1,215
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1,194
University of Michigan: Digital Collections
1,191
HAL Sorbonne Université
1,187
Oxford University Press (via Crossref)
1,138
more ...